Most brick and mortar stores can assemble the core of a system that's their business. At the very least your dealer should be able to assemble the receiver, speakers, and a reasonably similar source. I would think the money you save might not be worth results you may get when you get home.
Call a few Elac dealers around the country and ask what receivers they use to display these speakers.
Call a few Elac dealers around the country and ask what receivers they use to display these speakers.